<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>

<body>
    <script>
        class Person {
            constructor(name, age) {
                this.name = name;
                this.age = age;
            }
            //eat方法
            eat() {
                document.write("吃饭...");
            }
        }

        //定义Worker类继承Person
        class Worker extends Person {
            constructor(name, age, salary) {
                super(name, age)
                this.salary = salary
            }
        }

    </script>
</body>

</html>